Due to the lack of measurements in many regions, wave characteristics are estimated using different methods. Wave climate hindcasting/forecasting is mostly conducted by numerical models or empirical methods. Until now, different empirical methods have been developed for wave hindcasting. However, with the development of high speed processors, several sophisticated numerical models have been developed for wave prediction. These models are mostly phase-averaged spectral wave models developed in three generations. In the last two decades, third generation wave models have been used widely in academic and practical projects. In this regard, Port and Maritime Organization has produced his own model, PMO DYNAMIC. This model has been developed as a part of first three phases of Monitoring and Modeling of Study of Iranian Coasts project. PMO DYNAMIC package is a software available for engineering purposes. It has several modules that have been developed for different objectives. Wave model is the module which is used for the generation and transformation of wind waves in coastal areas. In this paper, in order to test the PMO DYNAMIC model capabilities, it has been applied for the prediction of wave parameters in Bushehr Bay and the results have been compared with MIKE21 SW model and measured data.

n the turbulent business environment, organizations try to develop their agility; therefore, they need to consider business process re-engineering (BPR). The present study is aimed, using the system DYNAMIC approach, at investigating and analyzing the effects of BPR factors on the organizational agility in the PMO which has the biggest container ports in Iran handling the highest volume of container operations and playing a very important and vital role in the country's economy and Trade. PMO also tries to maintain a high level of responsiveness to achieve agility and remain competitive in the global marketplace; therefore, it needs to consider BPR which is operationalized through cultural factors, communications, methodology, project management, strategic alignment, information technology, leadership, empowerment, and performance management. Initially, the literature was reviewed and the gathered data provided us with the possibility to present a conceptual framework for the study. Subsequently, some indices were identified for model variables evaluations through interviews with experts. Effort has been made in this research to simulate successful BPR key factors and organizational agility. Accordingly, first the main system defining variables were identified and realized to a great extent. Then, their relations were codified according to the casual loop diagrams.Next, its technical structure was completed through the main model design according to the stock-flow diagram and was assimilated in the VENSIM software, and some effective parameters were identified through the model execution and analyses of its results. Finally, more effective, principal indexes were determined. Although more detailed studies and model development deem necessary and real world variables need to be added to the model, it can still test and assess any strategy and solution almost satisfactorily.

the introduction and implementation of the Master Data Management (MDM) in an enterprise is a complicated process with different steps and variety of view points. MDM projects often start with the IT unit, and the Enterprise Resource Planning (ERP) is often a starting point for development. Effort has been made in this research to identify the implementation process of the MDM duties in the PMO in the area of port and marine services, determine the related various steps considered in the project, and evaluate its implementation outputs to achieve such factors as reduced data redundancy and consistency, increased data availability, reduced service costs, reduced data errors, risks identification, human resources management, and creativity (as regards strategy/agility) through rapid production of new systems, meeting new business demands, business growth, and identification of the hierarchical structure. Finally, assuming that these factors are achieved, the MDM in marine services is implemented and localized in the PMO for effectiveness and competitiveness.

Background: In intertrochanteric fractures، DYNAMIC hip screw (DHS) is the most frequently used tool، but several studies did not give good results for this device in reverse-oblique and transverse fractures. Current study aimed to compare fixation results of reverse-oblique intertrochanteric and short-segment subtrochanteric fractures using DYNAMIC condylar screw (DCS) and DHS in patients referred to Alzahra and Kashani Hospitals in Isfahan, Iran.Methods: In a cross-sectional study، medical files of the patients referred to emergency units of the two hospitals who were diagnosed with intertrochanteric or subtrochanteric fractures and underwent DHS or DCS surgery more than 6 months before were assessed; they were invited for follow-up visit and examination. Written consent forms were taken from all the patients upon their entry; and they were examined in terms of complications including nonunion and failure of device and level of fracture improvement. These cases were evaluated by simple radiography ,too. Results obtained from examination of patients in addition to demographic information were recorded in the data collection form for each patient.Findings: Perfect union was observed in 14 (of 25) patients in DHS group and 21 (of 25) patients in DCS group (56% vs. 84%) six months after the surgery. Bone union was significantly better in DCS group (P=0.031). In addition, six months after the surgery, the devices used in 14 people in DHS group and 24 people in DCS group were fixed and the difference between the two groups was significant (P=0.001). 14 and 24 patients had total recovery in DHS and DCS groups، respectively (20% vs. 44%) with a significant difference (P=0.020).Conclusion: Considering obtained results, it can be concluded that using DCS is recommended over DHS due to severity of pain, bone union and fixation of the device.

Purpose: This paper seeks to present a way to show the intention to share explicit and tacit knowledge and its impact on actual knowledge-sharing behavior.Methodology: Field data were collected from a total of 30 employees from Iranian Ports and Maritime Organization. They belong to two working groups, the first group is research center's experts and the second group is middle managers.Structural equation modeling (SEM) was used to assess the research model.Findings: SEM shows that the intention to share explicit knowledge influences explicit knowledge-sharing behavior to an equal extent both directly and indirectly. By contrast, tacit knowledge-sharing behavior is influenced directly to a greater extent by the intention to share tacit knowledge and less indirectly by the intention to share explicit knowledge.Research limitations: The study provides a method that may be applied by managers for the purpose of measuring explicit and tacit knowledge-sharing intention and behavior. Its limitations are due to the limited socioeconomic and geographic variability of the people and companies.The Hypothesis:Hypothesis 1: Employees' intention to share explicit knowledge is positively related to their explicit knowledge sharing behavior.Hypothesis 2: Employees' intention to share tacit knowledge is positively related to tacit knowledge sharing behavior.Hypothesis 3: Employees' intention to share explicit knowledge is positively related to intentions to share tacit knowledgeHypothesis 4: Employees' TKS behavior is positively related to EKS behavior.Hypothesis 5: Intention to explicit knowledge sharing has an indirect effect on increasing explicit knowledge sharing behavior, via the intention to share tacit knowledge and by extension tacit knowledge sharing behavior.

The purpose of the present research is to investigate the relationship between the dimensions of working life quality (cooperation in decision making, cooperation in problem solving, data sharing, constructive feedback, group work, and right understanding of defiance and job security) and the organizational commitment of PMO employees. The research is of correlation type and the population includes 400 people (all the PMO managers and employees in Tehran). Based on the Morgan table, a sample of 196 people was defined. The data collection instrument is a questionnaire. Face and content validity of instruments were defined and the reliability was determined by testing the 30 people sample and calculation of internal consistency coefficient (Cronbach). The alpha value is 0.97 and 0.92 for both the questionnaires respectively. The data was analyzed in two levels of descriptive and inferential using Pearson and regression correlation tests. The results reveal that there is positive and meaningful relation between all the dimensions of work life quality and organizational commitment of PMO employees. Also, the subscales of data sharing and job security have more share than other scales in forecasting the employees’ organizational commitment.